Effect of methylene chain length of polycarbonate (PC) glycols on properties of PC-based polyurethanes

Machiko Sakai, Suguru Motokucho, Ken Kojio, Mutsuhisa Furukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Polycarbonate-based polyurethane elastomers (PUEs) were prepared from poly(carbonate) glycol baring the number of methylene unit of 3, 4, 5 and 6. Aggregation structure and mechanical properties of these PUEs were investigated by differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), and tensile testing. The difference in temperature of the glass transition temperature of polyols (ΔTg,polyols) and Tg,PUEs (ΔTg) decreased with decreasing methylene chain length indicating the degree of microphase separation become stronger with decreasing methylene chain length. Also, Young's modulus increased with decreasing methylene chain length. Around the higher strain region in the stress-strain curve, the elongation-induced crystallization was suppressed for the PC-glycol-based polyurethane with even number of methylene chain length.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan - 55th SPSJ Annual Meeting
Number of pages1
Publication statusPublished - 2006
Externally publishedYes
Event55th SPSJ Annual Meeting - Nagoya, Japan
Duration: May 24 2006May 26 2006


Other55th SPSJ Annual Meeting

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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